Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B08—CLEANING
  • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
  • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
  • B08B3/02—Cleaning by the force of jets or sprays
  • B08B3/024—Cleaning by means of spray elements moving over the surface to be cleaned
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B08—CLEANING
  • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
  • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
  • B08B3/02—Cleaning by the force of jets or sprays
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
  • E04G23/00—Working measures on existing buildings
  • E04G23/002—Arrangements for cleaning building facades

Definitions

• the invention relates to cleaning devices.
• the invention relates in particular to cloth cleaning devices, such as, for example, awning cloths.
• the present invention is not limited to this particular application. It includes the cleaning of any surface, for example a building facade or a terrace. For these reasons, in the remainder of the present patent application, the object to be cleaned will be called "support”, without this terminology being considered as limiting in any way.
• a cleaning device comprising a nozzle for sending a high pressure cleaning liquid to the support to be cleaned. This device allows washing only small areas during a passage.
• An object of the invention is to provide a device for uniform washing of a support without damaging it.
• a device for cleaning a support comprising a housing and at least one cleaning liquid spraying means mounted on the housing.
• the device further comprises means for adjusting a distance between the projection means and the support.
• the casing carries at least two cleaning liquid spraying means.
• the assembly comprises at least one of the following characteristics: the device being moved in a cleaning direction, one of the cleaning liquid spraying means is shifted relative to the other in the direction cleaning device, the device further comprises at least three supports of the housing on the support, the device comprises four supports of the housing on the support, the supports are wheels, the device further comprises means articulated with the housing adapted to receive a device handling means, the cleaning liquid spraying means comprise an orifice having a main dimension of the order of 0.3 mm, the cleaning liquid spraying means have, during operation of the device, an angle of the projection opening aperture has a value of about 40 °, the cleaning liquid spraying means are arranged to support r, during operation, a permissible pressure of between about 30 bar and about 130 bar, the cleaning liquid spraying means are arranged to withstand, during operation, a permissible temperature of between about 30 0 C and about 100 c C, the device further comprises stiffening means of the cleaning liquid supply system, mounted on a supply system of the liquid cleaning spraying means behind
• a cleaning system of a support comprising a pressurizing machine for cleaning liquid and a device having at least one of the preceding characteristics.
• FIG. 1 is a front view in two dimensions of a device according to a particular embodiment of the invention, partially cut to illustrate the axis of rotation of a wheel
• Figure 2 is a sectional view along H-II of the device according to the same embodiment of FIG. 3 is a top view of the device according to the same embodiment of the invention
• FIG. 4 is a similar view from above of the device after removal of a stiffening plate
• FIGS. 5b are views respectively in perspective and in section of a nozzle
• Figure 6 is a view of the impact zones of the jets of cleaning liquid on the support.
• a device comprises: a housing 10, means 20 for spraying cleaning liquid mounted on the housing 10, - supports 30 of the housing 10 on the support, means 40 articulated with the housing 10 adapted to receive a means handling device.
• the casing 10 consists of a U-shaped sheet comprising a central core 12 and two lateral flanks 14,
• the housing 10 is open on three sides: the opposite side of the support, the side opposite it, and the side located between the two sides 14, 16, opposite the core 12 and facing the user and where are the means 40 articulated with the housing 10 mentioned above.
• the side opposite the side facing the support is closed.
• the housing 10 must also be close enough to the support to prevent splashes of cleaning liquid outside the surface to be cleaned.
• the height in excess of the supports 30 relative to the base of the casing 10 is preferably between 0.5 mm and 20 mm, typically of the order of 10 mm.
• three cleaning fluid spraying means 20 are provided. These are formed of nozzles distributed along the length of a main duct 22 extending between the two flanks 14 and 16, substantially perpendicular to the direction of displacement D operated during cleaning.
• the nozzles 20 project on the main pipe 22 and extend at least substantially parallel to the core 12 and the flanks 14, 16.
• the nozzles 20 consist of a cylindrical body 24 having a central bore 26 opening at the end of the body 24 at a diametral groove 27 with a defined bottom 28 by a concave dihedron (see Figures 5a and 5b). This geometry gives the jet leaving the nozzle the shape of a fan, leaving on the support traces of length // and width I 2 much less than / / (see Figure 6).
• the diametral grooves 27 of the nozzles 20 are oriented parallel to a generatrix orthogonal to the direction of movement D, so that the fan jets cover in combination a width of the support substantially equal to the casing 10 and the liquid is projected onto the surface of the support parallel to the weaving of the fabric when the support is formed of a fabric.
• the support is cleaned in its right wire for a greater efficiency of washing.
• the projection means 20 are not all rigorously aligned along a generator orthogonal to the direction of displacement D.
• the central nozzle 20 is offset from the other two in the cleaning direction D, corresponding to the direction of movement of the device. In this way, the jets of the three nozzles 20 do not interfere and do not disturb, and the impact zones of the cleaning liquid (referenced
• the three nozzles 20 may be aligned but have slightly different angular orientations to generate jets staggered on the support as shown in FIG. 6.
• the main pipe 22 closed at its ends by plates 70, 72, is supplied with cleaning liquid by a nozzle 50 which then divides into two arms 52, 54, joining the main pipe 22 on which are mounted the projection means 20 cleaning fluid.
• the aforementioned provisions allow to clean a large area and uniformly.
• the means 20 for spraying cleaning liquid are formed of small diameter nozzles, for example of the order of 0.3 mm. They may have an acute projection opening angle of between 35 ° and 55 ° for proper operation; in the case of this particular embodiment, this projection opening angle is about 40 ° for optimal operation. They are also designed to withstand a permissible pressure of between 30 bar and 130 bar and a permissible temperature of between 30 ° C. and 100 ° C. The pressure and the temperature are adjustable according to the type of support to be cleaned. For example, a support of black or dark color is treated at a temperature of the order of 30 ° C.
• these cleaning fluid spraying means are high pressure nozzles 20.
• the supports 30 are mounted on the housing 10 so as to ensure the perfect alignment of the surface of the support - in the case of a deformable support - in a plane delimited by the supports 30. This makes it possible to define a geometric surface on wherein the effect of the cleaning liquid spraying means is identical in all respects, thus ensuring uniform cleaning at all points of the cleaned surface.
• These four supports may be wheels 30, allowing a smooth and easy movement of the device on the support.
• the wheels 30 are advantageously rotatably mounted near respective ends of the base of the flanks 14, 16, on pins 32, 34, extending between the flanks 14, 16.
• the device further comprises a stiffening plate 60 mounted on the cleaning liquid supply system 50 to 54 and on the main pipe 22, behind the high pressure nozzles 20 relative to the support. This plate has the function of stabilizing the cleaning liquid supply system.
• This plate can also be used to protect the user from projections of cleaning liquid.
• the stiffening plate 60 consists of a sheet 62 which can completely cover the cleaning liquid supply system 50 and the nozzles 20 and can extend up to at the three edges of the casing 10. Holes 64 made in the plate 60 make it possible to evacuate the vapor evolved by the cleaning liquid coming out of the nozzles 20. The user can also observe, through the bores 64, the jets of liquid cleaner projected on the support and thus check the correct operation of the device.
• Means 40 are hingedly mounted on the housing 10, and are adapted to receive a handling means of the device.
• a handling means of the device In the present case, it is a pivoted U-shaped clevis 40 at 42, 44 on the lateral flanks 14, 16 of the casing 10, at the base of these flanks 14, 16, opposite the core 12.
• This yoke 40 is provided with a tip 46 for adapting a handling means, for example a pole, on the device so that, if it is to clean a support height, it is possible to work from the ground directly on the support without having to dismount it.
• the handling means must be long enough to be able to clean the device from the ground, without having to use stepladders for example.
• means for adjusting the height between the projection means 20 and the support comprise two plates 70, 72 integral with the ends of the main pipe 22 and adapted to be fixed by any appropriate means, for example screws 74 associated with wing nuts 76, adjustable height on the outer flanks 14, 16
• the flanks 14, 16 may be provided with a plurality of holes 15 distributed over the height of the flanks 14, 16 to accommodate the screws 74.
• an oblong slot instead of the holes allows a more adjustable end of the height of the projection means 20.
• the distance separating the nozzles 20 between them is between 5 cm and 15 cm, advantageously of the order of 9 cm, and the distance separating the outlet orifice of the nozzles 20 and the support is between 0.5 cm. and 10 cm, advantageously of the order of 4.5 cm.
• the height adjustment of the nozzles 20 relative to the support makes it possible to clean surfaces of different materials, compositions and reliefs.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Electrochemistry (AREA)
• Mechanical Engineering (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Cleaning By Liquid Or Steam (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=38704907

Family Applications (1)

Country Status (4)

Family Cites Families (8)

• 2007
  • 2007-04-24 FR FR0754673A patent/FR2915408B1/fr not_active Expired - Fee Related
• 2008
  • 2008-04-22 EP EP08787983A patent/EP2152441A2/de not_active Withdrawn
  • 2008-04-22 US US12/597,492 patent/US20100116302A1/en not_active Abandoned
  • 2008-04-22 WO PCT/FR2008/000569 patent/WO2008152216A2/fr active Application Filing

Non-Patent Citations (1)

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